books.google.ca - In today’s world of online maps and travel directions delivered wirelessly to hand-held devices, getting from place to place requires little thought from most of us—which is a good thing, since accurate navigation can be tricky. Get your bearings with Mark Denny—an expert at explaining scientific...http://books.google.ca/books/about/The_Science_of_Navigation.html?id=88smdocoApUC&utm_source=gb-gplus-shareThe Science of Navigation